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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 8 |
| 3 | 128 |
| 4 | 5168 |
| 5 | 39921968 |
| 6 | 6266942768 |
| 7 | 355693695038768 |
| 8 | 122000794103870768 |
| 9 | 25852138739679080510768 |
| 10 | 8841762019591840694222696510768 |
| 11 | 8231680416197514658419785576510768 |
| 12 | 13763753099458025462513494240000687976510768 |
[2,8,128,5168,39921968,6266942768,355693695038768, 122000794103870768,25852138739679080510768, 8841762019591840694222696510768, 8231680416197514658419785576510768, 13763753099458025462513494240000687976510768] |